Locomotive cylinder saddle structure



June 28, 1932. K. s. HOWARD ET AL LOCOMOTIVE CYLINDER SADDLE STRUCTURE 2 Sheets-Sheet 1 Filed June 3. 1951 June 28, 1932. 5', HOWARD ET AL 1,864,736

LOCOHOTIVE CYLINDER SADDLE vSTRUCTURE Filed June 3, 1951 2 Sheets-Sheet 2 A for/76y Patented June 28, 1932 Mrs J s'reTfE KABL S. HOWAR-ID,- OF ST. LOUIS, MISSOURI, AND EINAB Gr. HALLQUIEST, OF EDWARDS-v VILLE' ILLINOIS ASSIGNORS TO GENERAL STEEL CASTINGS CORPORATION, OF r GRANITE'CITY, ILLINOIS, A CORPORATION OF DELAWARE IJOCGMOTIVE CYLINDER SADDLE STRUCTURE Application filed June 3,

The invention relates to railway rolling stock and more particularly to the saddle structure which mounts the main steam cylinders and their supply valve chambers and also forms a support for the boiler beneath the smoke box and includes steam passageways leading through'the smokebox supporting portion. 1

The invention is particularly applicable to structures in which the steam passageways are rigidly connected to portions of the smoke box support such as is usually present where the saddle and steam passageways are cast integrally either in the form of a single structure extending across the locomotive or in the form of a divided structure comprising two or more units bolted together. Such structure may be formed integrally with the locomotivebed or main framing or may be zo'formed separately from the main framing and secured thereto. In such structures the steam passageways and other portions are subject to difi'ere'nt temperatures during the operation of the locomotive due tothe inter- 'mittent passage of the steam through certain parts spaced from other parts which are ap-v proximately subject to atmospheric temperature. As a result, stresses are created which tend to injure the structure by creating theresoin strains of considerable magnitude and/or by working loose the securing elements by which the saddle members are held to each other or to the locomotive framing. H In a co-pending application, Serial #547,- '136 filed June 26, 1931 in the name of K. S. Howard, there is disclosed certain structure by which this undesirable resultmay be eliminated, and the present invention embodies other features which have the same general 49 object of reduction or elimination of the strains referred to. l 7

Another object of the invention is to provide a horizontal Web surrounding the upwardly extending portions of the steam pas- 5 'sageways leading through the smoke box sup port which web forms, in eil'ect, a bottom wall or closure for that portion of thesmoke' box immediately over the middle portion of r the saddle, the web being secured to the side walls of the "smoke box support and to'the 1931. Serial at. 541,894.

upwardly extending portions of the steam passageways and being arranged to accommodate relative vertical movement of the pass sageways and the side walls of the smoke box as well as movement of the smoke box support walls to or from each other.

More particularly the present invention contemplates the provision of a box like boiler" support with steam passageways rigid with the side walls and extending inwardly therefrom and upwardly through the top of the support, there being a corrugated horizontal web across the support-surrounding the upwardly extending portions of the ste'am passages and providing a closure for the bottom of the smoke box adapted to receive hot cmders and to prevent thepassageof cold air to the smoke box.

In the accompanying drawings which illustrate the invention Figure 1 is, in part, an end elevation, and,

in part, a transverse section through a locomotive cylinder saddle casting embodying one form of the invention.

Figure 2 is, in part, a top view, and, in part, a horizontal section taken on the line 2-2' of Figure 1. v

Figure 3 is a vertical longitudinal section taken on the line 38 of Figure l. Y Figure 4: is a top view of one-half of a locomotive saddle structure embodying modified "form of the invention.

Figure 5 is a vertical transverse section taken on the line 55 of Figure ,4.

The device shownin Figure l'i main steam cylinders 1, supply valve chambers2, a transverse bottom web 3 between cylinders 1, and vertical webs 4 by which the structure is bolted to the side frames 5 of a locomotive. A box like boiler supporting structure above web 3" includes front and rear walls 6 and 7, respectively, and side walls 8. Curved flanges 9 project outwardly from walls 6, 7 and 8 and form a continuous arcuate supporting member adaptedto engage the underside of the boiler shell (not lsjhown) which forms thewall of the smoke A pair of exhaust steam passageways 10 lead inwardly from the ends of each chamber ncludes EFICE i 2 extending through the adjacent side wall 8 and merging with each other and then, preferably, turning upwardly and merging with the passageways from the opposite chamber 2 and projecting above the boiler supporting structure as indicated at 11. Walls 8 are integral with the outer walls of passageways 10 and project above the latter a substantial distance.

The top walls 10a of the steam passageways are projected forwardly and rearwardly beyond the sides of the passageways as indicated at 12 to merge with the front and rear walls 6 and 7 of the boiler support and form a horizontal web across the boiler sup port surrounding the upwardly extending portions 11 of the steam passageways. This Web 12 is provided with substantial corrugations 13 extending across the saddle parallel with the general direction of the steam passageways. The front and rear walls 6 and 7 unite with the side walls 8 by means of arcuate connections 14.

Elements 1.3 and 14 provide a certain degree of flexibility in the structure whereby the steam passageways 10 may expand and contract to greater degrees than the walls 6 and 7 without setting up undue strains in the latter or in other parts of the saddle structure. In other words, the transverse walls 6, 7, and 12 will not hold the side walls 8 and exhaust passageways 10 and 11 so rigidly that they can not be distorted by the expansion and contraction forces generated by the heating and cooling of the steam passageways 10.

In the described structure, passageways 10 are for the exhaust steam and the live steam is led into chambers 2 through piping connected to the chambers at 15 and located entirely outside of the saddle structure. However. it would be possible to provide additional live steam passageways leading through the boiler support, which arrangement would increase the extent of steam heated surfaces and likely the degree of expansion and contraction relative to the boiler support members.

In Figures 4 and 5, I illustrate a modifica- .tion of the invention showing another saddle structure arranged to be applied to the locomotive side frames 45. This saddle includes a'box-like structure forming the smoke-box support and including a bottom wall 45, side walls 46, a front wall 47 and a rear wall 48,

. walls 46, 47, and 48 being flanged, as indicated at 49, to engage the smoke box.

The exhaust steam passageways 50 lead inwardly from the valve chambers 51 and extend through, and are rigid with, the side walls 46 of the smoke box support. The passageways extend inwardly and upwardly from walls 46 with their inner walls merging, as indicated at 52, above the level of the tops of their horizontal portions. A shoulder '53 extends around the outer walls of passageways 50 and a corresponding shoulder 54 is provided in the box walls 46, 47 and 48.

Relatively thin plates 55 are fitted around the merged portions of passageways 50 and rest upon shoulders 53 and 54 and, preferably, are welded thereto and to each other as indicatedat W. By providing corrugations 56 in plates 55, their flexibility is increased and these corrugations may extend along the sides of the plate as well as across the front and rear portions as shown in Figure 2. This structure forms an air-tight closure below the smoke box which not only prevents the accumulation of cinders and ashes within the saddle, but also provides for the proper entrainment of hot gases within the smoke box by preventing the admission of air from the exterior of the smoke box. At the same time, the expansion of the exhauststeam passages is facilitated and the remainder of the saddle structure is relieved of excessive strains due to the heating of the passages.

While the corrugations 13 are shown extending transversely of the saddle, it would be an obvious modification to extend the cor-- rugations parallel with the side walls 8 or to continue the corrugations of the cast web all to the saddle without affecting the use of the novel features described above.

Various other modifications in the details of the saddle structure and associated parts may be made without departing from the spirit of the invention as expressed in the claims.

We claim: v

1. In a locomotive cylinder saddle struc-' ture, upright walls for supporting the boiler, a transverse web extending between said wa lls and provided with one or more corrugations to accommodate expansion in the structure due to variations in temperature.

2. A structure as described in claim 1 which is embodied in a one piece casting.

3. A locomotive cylinder saddle structure including spaced boiler supporting walls, steam passageways integral therewith and a. web extending between and integral with said walls and passageways and having a corrugated portion to provide for difference in expansion and contraction of said wallsand passageways due to temperature condi-- tions 7 4. A structure as described in claim 3 which is embodied in a one piece casting.

5. In a locomotive cylinder saddlestruct-ure, upright boiler supporting-walls spaced apart, steam passageways extending between and merging with opposite ones of said walls, and a horizontal web extending between and merging with said passageways and walls and including a corrugated portion for relieving the structure of injurious strainsdue to different degrees of expansion and contraction present in parts subject to difierent temperature conditions.

6. In a locomotive cylinder saddle, a box like structure extending transversely of the locomotive to mount opposite cylinders, steam passageways extending through said structure transversely of the locomotive and fixed to the side walls of the structure, said structure including a horizontal web having corrugations extending transversely of the locomotive to accommodate different degrees of expansion of said structure and passageways.

7. In a locomotive cylinder saddle, a box shaped support for the boiler, steam passageways projecting through the sidewalls of said support and then upwardly into the boiler smoke box, each passageway having a cross sectional area much smaller than the area of the side wall through which it projects, the top walls of the inwardly extending portions of said passageways being projected so as to extend to the end walls of said support and to form a' horizontal web below the boiler smoke box and extending between the upwardly extending portions of said passageways and said end wallsto permit said passageways to expand and contract relative to said walls.

8. As a new article of manufacture, a one v piece casting comprising the structure speciwhich the side walls of the boiler support extend upwardly above the horizontal web.

10. In a locomotive cylinder saddle cast structure, a box like boiler support comprising side and end walls having arcuate con structure, a box like boiler support comprising side and end walls having arcuate connections with each other, and a web merging with said walls and extending between them and having a corrugated portion, steam pasconnected with said side walls.

' saidwa'lls to form a closure for the bottom portions of said passageways and connected to the upper portionsof said walls and said passageways to form a closure for the bottom of the smoke box between said walls and said passageways, there being a corrugation inv said plate surrounding the upwardly. extending portions ofsaid passageways.

15. Ina locomotive structure, smoke box supporting walls, steam passageways rigid with said walls and extending through the same and then inwardly and upwardly, and a relatively thin top plate extending across the space between said walls and connected thereto and to portions of said passageways to form aclosure at the bottom of the smokebox and adapted to flex to provide for expansion in the innerportions of said passages.

16. A locomotive integral structure comprising smoke box supporting: walls and steam passageways extending through andv rigidly connected to said walls and extending inwardly and upwardly and merging with each other, the upwardly extending portions of saidpassageways being spaced and disconnected from the remaining parts of said structure, flanges projecting from said passageways and a separately formed plate surrounding said passageways and extending between said walls and secured to and supported ,upon said flanges.

17.'A locomotive integral structure comprising smoke box supporting walls and steam passageways extending through and rigidly connected to said walls and extending inwardly and upwardly and merging with each other, the upper portions of saidpas 'sageways being spaced and disconnected from thekremaining parts of said structure, and'a plurality "ofgseparately formed plates sur-- "rounding said passageways and extending vol therefrom to said walls and being welded to. 1 each other and to said passageways and said walls.

18. A locomotive smoke box support with side walls and atop sheet connecting said movement of said walls and passageway to or from each other.

20. In combination, a locomotive smoke box support having an end wall, a transversely extending passageway and a corrugated web extending between said passageway and wall to provide for relative movement of said passageway and wall due to the expansion or contraction in said passageway. 21. A structure as described in claim 20 which'is embodied in a one piece casting.

22. In a locomotive cylinder saddle structure, a smoke box support including side walls, steam passageways extending through and rigid with said walls, said passageways extending inwardly and upwardly, and a separately formed top plate for said support connected to the upwardly extending portions of said passageways and to said walls to form a closure for the bottom of the smoke box between said passageways and said walls, said plate being corrugated to provide for expansion in the inner portions of said passageways.

28. In a locomotive cylinder saddle structure, a smoke box support including side walls, steam passageways extending through and rigid with said walls, said passageways extending inwardly and upwardly, and a top plate for said support connected to the upwardly extending portions of said passageways and to said walls to form a closure for the bottom of the smoke box between said passageways and said walls, there being a corrugation in said plate surrounding the upwardly extending portions of said passageways.

24. In a locomotive structure, smoke box supporting walls, steam passageways rigid with said walls and extending through the same and then inwardly and upwardly, and a relatively thin top plate extending across the space between said walls and connected thereto and to portions of said passageways to form a closure atthe bottom or" the smoke box-and adaptedto flex to provide for expansion in the inner portions of said passageways.

25. A locomotive integral structure comprising smoke box supporting walls and J steam passageways extending through and rigidly connected to said walls and extending inwardly and upwardly and merging with each other, the upper portions of said passagewaysbeing spaced and disconnected from the remaining parts of said structure, and a plurality of separately formed corrugated plates surrounding said passageways and extending therefrom to said Walls and being welded to each other and to said passageways and said walls.

In testimony whereof we hereunto a'fiix our signatures this 27th day of May, 1931.

EINAR G. HALLQUIST. KARL S. HOWVARD. 

